Significant sensitivity variations among cell-phone camera modules have been observed. As a result, for an effective and reliable white balancing, per-module RGB-ratios calibration/estimation under various illumination conditions is required. Herein, a new technique is proposed which minimizes/simplifies RGB-ratios calibration/estimation process. The proposed method could be based on either direct image capture or spectral numerical processing--the latter is shown to be more flexible and accurate.

Date Published: 25 January 2010
PDF: 9 pages
Proc. SPIE 7536, Sensors, Cameras, and Systems for Industrial/Scientific Applications XI, 75360U (25 January 2010); doi: 10.1117/12.840040

Published in SPIE Proceedings Vol. 7536:
Sensors, Cameras, and Systems for Industrial/Scientific Applications XI
Erik Bodegom; Valérie Nguyen, Editor(s)